package com.atguigu.gulimall.ware.service.impl;

import com.atguigu.common.constant.WareConstant;
import com.atguigu.gulimall.ware.vo.MergeVo;
import com.atguigu.gulimall.ware.vo.PurchaseDoneVo;
import com.atguigu.gulimall.ware.vo.PurchaseItemDoneVo;
import com.atguigu.gulimall.ware.entity.PurchaseDetailEntity;
import com.atguigu.gulimall.ware.service.PurchaseDetailService;
import com.atguigu.gulimall.ware.service.WareSkuService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.ware.dao.PurchaseDao;
import com.atguigu.gulimall.ware.entity.PurchaseEntity;
import com.atguigu.gulimall.ware.service.PurchaseService;
import org.springframework.transaction.annotation.Transactional;


@Service("purchaseService")
public class PurchaseServiceImpl extends ServiceImpl<PurchaseDao, PurchaseEntity> implements PurchaseService {

	@Autowired
	PurchaseDetailService detailService;

	@Autowired
	WareSkuService wareSkuService;

	@Autowired
	PurchaseService purchaseService;

	@Autowired
	PurchaseDetailService purchaseDetailService;

	@Override
	public PageUtils queryPage(Map<String, Object> params) {
		IPage<PurchaseEntity> page = this.page(
				new Query<PurchaseEntity>().getPage(params),
				new QueryWrapper<PurchaseEntity>()
		);

		return new PageUtils(page);
	}

	@Override
	public PageUtils queryPageUnreceivePurchase(Map<String, Object> params) {
		IPage<PurchaseEntity> page = this.page(
				new Query<PurchaseEntity>().getPage(params),
				new QueryWrapper<PurchaseEntity>().eq("status", 0).or().eq("status", 1)
		);

		return new PageUtils(page);
	}

	@Transactional
	@Override
	public void mergePurchase(MergeVo mergeVo) {
		Long purchaseId = mergeVo.getPurchaseId();
		if (purchaseId == null) {
//            新建一个
			PurchaseEntity purchaseEntity = new PurchaseEntity();
			purchaseEntity.setStatus(WareConstant.PurchaseStatusEnum.CREATED.getCode());
			purchaseEntity.setCreateTime(new Date());
			purchaseEntity.setUpdateTime(new Date());
			this.save(purchaseEntity);
			purchaseId = purchaseEntity.getId();
		}
		//TODO 确认采购单状态是0，1才可以合并
		List<Long> items = mergeVo.getItems();
		Long finalPurchaseId = purchaseId;
		List<PurchaseDetailEntity> collect = items.stream().map(i -> {
			PurchaseDetailEntity detailEntity = new PurchaseDetailEntity();

			detailEntity.setId(i);
			detailEntity.setPurchaseId(finalPurchaseId);
			detailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.ASSIGNED.getCode());
			return detailEntity;

		}).collect(Collectors.toList());

		detailService.updateBatchById(collect);
		PurchaseEntity purchaseEntity = new PurchaseEntity();
		purchaseEntity.setId(purchaseId);
		purchaseEntity.setUpdateTime(new Date());
		this.updateById(purchaseEntity);

	}

	@Override
	public void receivedPurchase(List<Long> ids) {
		/**
		 * 领取采购单
		 * 1.领取 采购单的id json数据 Received
		 * 1.1确认是新建或者已分配
		 * 1.2改变采购状态
		 * 1.3改变采购项状态
		 */
//        1.领取 采购单的id json数据 Received
//         * 1.1确认是新建或者已分配
		List<PurchaseEntity> collect = ids.stream().map(id -> {
			PurchaseEntity byId = this.getById(id);
			return byId;
		}).filter(item -> {
			if (item.getStatus() == WareConstant.PurchaseStatusEnum.CREATED.getCode() || item.getStatus() == WareConstant.PurchaseStatusEnum.ASSIGNED.getCode()) {
				return true;
			}
			return false;
		}).map(item -> {
			item.setStatus(WareConstant.PurchaseStatusEnum.RECEIVE.getCode());
			item.setUpdateTime(new Date());
			return item;
		}).collect(Collectors.toList());

//         * 1.2改变采购状态
		this.updateBatchById(collect);
//         * 1.3改变采购项状态
		collect.forEach(item -> {
			List<PurchaseDetailEntity> list = purchaseDetailService.listDetailByPurchaseId(item.getId());
			List<PurchaseDetailEntity> collect1 = list.stream().map(entity -> {
				PurchaseDetailEntity purchaseDetailEntity = new PurchaseDetailEntity();
				purchaseDetailEntity.setId(entity.getId());
				purchaseDetailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.BUYING.getCode());
				return purchaseDetailEntity;
			}).collect(Collectors.toList());
			detailService.updateBatchById(collect1);
		});
	}

	@Transactional
	@Override
	public void done(PurchaseDoneVo doneVo) {

		Long id = doneVo.getId();
		//1.改变采购项的状态
		Boolean flag = true;
		List<PurchaseItemDoneVo> items = doneVo.getItems();
		ArrayList<PurchaseDetailEntity> updates = new ArrayList<>();
		for (PurchaseItemDoneVo item : items) {
			PurchaseDetailEntity purchaseDetailEntity = new PurchaseDetailEntity();
			if (item.getStatus() == WareConstant.PurchaseDetailStatusEnum.HASERROR.getCode()) { //采购失败，falg为false
				flag = false;
				purchaseDetailEntity.setStatus(item.getStatus());//设置每个采购项的状态
			} else {
				purchaseDetailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.FINISH.getCode());
				//3.将成功采购的进行入库
				PurchaseDetailEntity entity = detailService.getById(item.getItemId());
				wareSkuService.addStock(entity.getSkuId(),entity.getWareId(),entity.getSkuNum());

			}
			purchaseDetailEntity.setId(item.getItemId());
			updates.add(purchaseDetailEntity);
		}
		detailService.updateBatchById(updates);

	}

}